| 摘要 |
A sportsball includes a ball carcass having an air cavity therein, wherein the ball carcass includes two ball shells, each of the ball shells having an outer surface, a plurality of channels indented on the outer surface to form a plurality of panel contours thereon, and a contouring edge defining a starting point at one of the channels to continuously extend from the channel to another the adjacent channel until the contouring edge is extended back to the starting point, wherein the two ball shells are integrally bonded with each other to form the ball carcass that the contouring edges of the ball shells are alignedly linked to form a common edge of the ball carcass, such that the common edge of the ball carcass, which is a molding line thereof, also forms as the channels of the ball carcass to invisible the molding line thereat.
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